Utility knife with retractable blade guard



FIG. 1 is a top perspective view of a utility knife with retractable blade guard showing my new design with the blade guard extended and a blade shown in phantom line;

FIG. 2 is a side elevational view thereof, wherein the opposite side view is a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken line showing of the blade is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a utility knife with retractable blade guard, as shown and described. 